CN2321977Y - Constant power planetary friction type stepless speed variator - Google Patents
Constant power planetary friction type stepless speed variator Download PDFInfo
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- CN2321977Y CN2321977Y CN 98220687 CN98220687U CN2321977Y CN 2321977 Y CN2321977 Y CN 2321977Y CN 98220687 CN98220687 CN 98220687 CN 98220687 U CN98220687 U CN 98220687U CN 2321977 Y CN2321977 Y CN 2321977Y
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- wheel
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- planetary
- stepless speed
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Abstract
The utility model discloses a constant power planetary friction type stepless speed variator. More than three butterfly-shaped springs are stacked to form a pressure device of the utility model, and the butterfly-shaped springs are sheathed in a pressure disk and impacted on a pressure ring and a constant wheel. In a speed regulation control mechanism, a worm screw drives a speed regulation worm wheel (nut), the worm wheel and a speed regulation screw rod are spiral driving. The move of the screw rod compels the relative position between a sun wheel and the pressure disk to change, and finally, the work radius in the friction position of a planetary cone wheel, the sun wheel and the constant wheel is changed. According to the principle of the planetary friction driving, a planetary frame obtains different output rotary speeds, and the stepless speed variation is realized.
Description
The utility model is a kind of speed change gear that is used for industrial field, and exactly, it is a kind of constant-power planet friction type stepless speed changer that relates to departments such as lathe, petrochemical industry, light industry, building materials, communications and transportation.
As everyone knows, existing planetary friction formula stepless speed variator (JB/T6950-93), its slip gear is made up of sun gear, platen, several planetary cone wheels and permanent wheel and planet carrier usually.Its main deficiency is: the one, and the impacting force maximum that the pressurizing mechanism of planetary friction formula stepless speed variator applies when making high speed, compress during low speed to loosen gradually and reduce, thereby understressed easily causes skidding when causing low speed, pressurization is excessive during high speed easily causes heating, for this reason, existing planetary friction formula stepless speed variator stipulates that in operating instruction torque value allowable only uses half of auxiliary motor power capacity, and to guarantee its proper functioning, this obviously is irrational.The 2nd, the speed regulation control mechanism of existing planetary friction formula stepless speed variator (end cam mechanism) manufacturing process is complicated, and cost is higher, needs to be equipped with special-purpose tachometer in addition again and just can reflect the velocity amplitude of being transferred.
By retrieval as can be known: also do not have a kind of planetary friction formula stepless speed variator to come out at present with desirable permanent power.
The purpose of this utility model is exactly in order to overcome the above-mentioned deficiency of existing planetary friction formula stepless speed variator, to make planetary friction formula stepless speed changer can realize permanent power, thereby make low velocity zone can reach the bearing capacity of power of motor capacity.
The purpose of this utility model is to realize like this, constant-power planet friction type stepless speed changer structure is mainly by slip gear, pressurization device and speed regulation control mechanism are formed, the pressurization device impacting force is formed by stacking by three above butterfly springs, butterfly spring is enclosed within the platen and is pressed on pressure ring and takes turns with perseverance, (platen and pressure ring connect firmly together with screw), in the speed regulation control mechanism, by worm drive speed governing worm gear (nut), worm gear and speed governing screw mandrel are power screw, screw mandrel moves to chase after the relative position of sun gear and platen is changed, changed the radius of clean-up of planetary cone wheel and sun gear and friction place of permanent wheel at last, according to the planetary friction transmission principle, thereby make planet carrier output realize stepless speed regulation.Test the speed pointer and worm gear connects firmly together, so the angle that worm gear rotates just reflects the velocity amplitude of speed governing by pointer.
The utility model shows through overtesting and detection, it has reached the constant-power stepless speed change requirement, and existing planetary friction formula stepless speed variator does not have constant output characteristic, the low velocity zone bearing capacity is relatively poor, the utility model structure and price are more reasonable, it is more convenient to use, its slip is stabilized in about 3%, and efficient reaches more than 80%.
Below with reference to accompanying drawing the utility model and embodiment are further described:
Fig. 1 is a main sectional view of the present utility model.
Fig. 2 is a left view of the present utility model.
Among the figure, 1 is input shaft; 2 are speed governing worm gear (nut); 3 are the speed governing screw mandrel; 4 are the pointer that tests the speed; 5 are the speed governing worm screw; 6 is butterfly spring; 7 is platen A; 8 is pressure ring; 9 is permanent wheel; 10 is planetary cone wheel; 11 is sun gear; 12 is platen B; 13 is planet carrier; 14 is output shaft.
The working procedure of planetary friction transmission is: drive sun gear 11 and platen B12 by input shaft 1, drive the friction pair of forming by perseverance wheel 9 and pressure ring 8 by planetary cone wheel 10, according to the planetary friction transmission principle, planet carrier 13 rotates, make the output shaft that is connected with it rotate, in pressurization device, pressurization device is made up of the butterfly spring more than three 6, butterfly spring 6 is enclosed within on the platen 7 and is pressed on pressure ring 8 and takes turns on 9 with permanent, platen 7 connects firmly together with pressure ring 8 usefulness screws, thereby can guarantee that spring force is applied to pressure ring 8 and permanent wheel 9 and middle planetary cone wheel 10 contacting points, planetary cone wheel 10 can be done inside and outside moving along the guiding groove of planet carrier, make the pressure ring 8 that is clipped in its both sides open as outwards moving, make butterfly spring compress, and produce maximal friction with permanent wheel 9, again according to the planetary friction transmission principle, this moment, planet carrier 13 rotating speeds were minimum, thereby the rotatingshaft rotating speed that links together with output shaft 14 is minimum, its torque transmitted maximum in the time of can having satisfied low speed.Otherwise planetary cone wheel moves inward, spring relaxation then, and the frictional force minimum, it is little that this moment, output speed was in the torque that high velocity needs, and so just can realize constant-power speed regulation.
The working procedure of speed regulation control mechanism is: drive speed governing worm screw 5 by handwheel, speed governing worm gear 2 is rotated, because the worm gear endoporus is a trapezoidal screw, so worm gear (nut) 2 rotates speed governing screw mandrel 3 supporting with it is moved, make sun gear 11 and the relative position of platen B12 change again, thereby sun gear 11, platen B12 are compressed relatively, make that planetary cone wheel 10 wherein is inside and outside mobile, changed the radius of clean-up of planetary cone wheel 10 at last, realized stepless speed regulation with sun gear 11 (platen 12) and 9 (pressure ring 8) friction place of permanent wheel.The pointer 4 that tests the speed connects firmly together with worm gear, so the angle that worm gear rotates just reflects the velocity amplitude of institute's speed governing by pointer.
Claims (1)
1. a constant-power planet friction type stepless speed changer is characterized in that; In pressurization device and the speed regulation control mechanism, the pressurization device impacting force is formed by stacking by three above butterfly springs (6), butterfly spring (6) is enclosed among the platen A (7) and is pressed on pressure ring (8) and takes turns on (9) with permanent, platen (7) connects firmly together with screw with pressure ring (8), in the speed regulation control mechanism, speed governing worm gear (2) is power screw with speed governing screw mandrel (3), and the pointer that tests the speed (4) connects firmly together with worm gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98220687 CN2321977Y (en) | 1998-04-02 | 1998-04-02 | Constant power planetary friction type stepless speed variator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98220687 CN2321977Y (en) | 1998-04-02 | 1998-04-02 | Constant power planetary friction type stepless speed variator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2321977Y true CN2321977Y (en) | 1999-06-02 |
Family
ID=33972418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98220687 Expired - Fee Related CN2321977Y (en) | 1998-04-02 | 1998-04-02 | Constant power planetary friction type stepless speed variator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2321977Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101303071B (en) * | 2007-05-08 | 2010-08-18 | 京瓷美达株式会社 | Traction-drive type driving-force transmission mechanism and image forming apparatus equipped therewith |
| CN102635440A (en) * | 2012-04-28 | 2012-08-15 | 重庆长安汽车股份有限公司 | Driving wheel assembly and engine front gear train using same |
| CN104613148B (en) * | 2013-11-01 | 2017-04-12 | 日本电产新宝株式会社 | Frictional power transmission device |
-
1998
- 1998-04-02 CN CN 98220687 patent/CN2321977Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101303071B (en) * | 2007-05-08 | 2010-08-18 | 京瓷美达株式会社 | Traction-drive type driving-force transmission mechanism and image forming apparatus equipped therewith |
| US8062161B2 (en) | 2007-05-08 | 2011-11-22 | Kyocera Mita Corporation | Traction-drive type driving-force transmission mechanism and image forming apparatus equipped therewith |
| CN102635440A (en) * | 2012-04-28 | 2012-08-15 | 重庆长安汽车股份有限公司 | Driving wheel assembly and engine front gear train using same |
| CN102635440B (en) * | 2012-04-28 | 2016-06-01 | 重庆长安汽车股份有限公司 | A kind of drive assembly and adopt the motor front-end wheel system of this drive assembly |
| CN104613148B (en) * | 2013-11-01 | 2017-04-12 | 日本电产新宝株式会社 | Frictional power transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |